tom-c2

Hello Tony, can You please explain how the powersave settings are to be tuned ? The data rates on USB would be about 10MBit/s per Transponder and i would like to install 3 USB tuners. With 2 transponders on 3 tuners round about 60MBit/s on USB and this transferred to GBit LAN should be possible. The Raspy 2 fails with more than 4 transponders because of the slow LAN attached behind USB.

Hello, i found this https://forum.ubuntuusers.de/topic/technisat-skystar-usb-hd-device-not-found/ and installed the media_build. Seems that this drivers aren't included in standard kernel package.

Hello, i think this are the first ones but then several DVB Tuner devices for USB and PCI will follow: CONFIG_MEDIA_DIGITAL_TV_SUPPORT CONFIG_V4L_PLATFORM_DRIVERS My personal interest is in USB DVB Sky Star Module first, but there may be the other modules needed by others: kernel/drivers/media/dvb/dvb-usb/dvb-usb-technisat-usb2.ko

Hello Forum, i just got my new tinker board running with armbian, thanks for the good work ! I want to set up a vdr vnsi server on this to replace the existing Raspberry 2. To get the DVB USB Skystar Tuners running several modules out of kernel/drivers/media like dvb-core and usb are needed. Are this kernel drivers already compiled available or what to do to get them ? Thanks Thomas

Hello, is there someone in this forum who can tell about this "coherent_pool" ? Is there some adjustment needed in uboot to reseve some DRAM for this pool ? Until now i only found that default size is 256kB and this is much too small for some multimedia devices. If i take "coherent_pool=8M" the system not even runs until video chip initialization, hdmi stays black. If set it to 1M system boots. What are the limits, is there something to adjust in uboot ? Thanks Thomas

Hello Forum, i am using a vdr headless server with 3 Technisat Skystar USB tuners for satellite television streaming. Before i used a raspberry pi 2 but because of limitations with its ethernet bandwith i went to odroid c2. System is now armbian with self compiled vdr with vnsi plugin, both out of git repo. System runs fine but after some hours (8h) a sporadic failure occurs and (USB?) system becomes unusable, To get the 3 dvb-s2 tuners running i increased the urb pool (USB request block) with kernel parameter "coherent_pool=6M" in boot.ini. I calculated that every of all 3 instances of driver needs about 512kB of USB buffer memory, without the option the first instance fails with error -12 (ENOMEM). At first i put an option "coherent_pool=32M" to test but it seemed that this was ignored without any message. I found a hint in another forum and tried 6M and that seemed to be taken and to be enough for my 3 tuner devices. My first questions is: what are the limits for this parameter coherent_pool and what is the default value ? Second: what can i do to increase stability of USB ? Here the syslog after some hours: WARN::urb_dequeue:780: urb->hcpriv == NULL; urb = ffffffc07a0c9000 status=-2 and then lots of driver and application errors because of usb action errors: dvb-usb2: i2c-error: out failed 68 = -110